Jack Wolfskin 5th Avenue Coat Jacket 92% Polyester/8% Polyamide Lining Imported Medium-warm poly fiber fill polyester fibrefill Insulation (100 g/M2) Waterproof short Coat with medium-warm Insulation Hood: lightweight poly fiber fill polyester fibrefill Insulation (80 g/M2) Waterproof, Windproof and Breathable Easy to clean, Less sensitive to water than down and They insulate even when damp An excellent warmth-to-weight ratio, A generally high level of heat retention and A small pack size in comparison with other filling materials.